Intensifier for spark-plugs.



- E. F. COGLEY. INTENSIHER FOR SPARK PLUGS. APPLICATION FILED JULY 9,1915;

7 Patente Apr. 11,1916.

EDWARD COGLEY, OF OMAHA, NEBRASKA.

INTENSIFIER FOR SPARK-PLUGS.

Specification of Letters Patent.

Patented Apr. 11, 1916.

Application filed July 9, 1915. Serial No. 39,014.

To all whom it may concern:

Be it 1mown that I, EDWARD F. C oGLnY, a citizen of the United States, residing at Omaha, in the county of Douglas and State of Nebraska, have invented certain new and useful Improvements 1n lntenslfiers for SparkPlugs, of which the following is a specification.

This invention relates to an electrical intensifier or spark gap, being an attachment for spark plugs, and has for its object, broadly, to provide a construction requiring few and simple parts so that the intensifiers will be durable and that manufacture will be convenient and economical.

The invention also has reference to compactness in structure to prevent vibration of the assembled parts or undue vibration 'when, mounted upon a spark plug, and such a construction that a short c rcuit will be" prevented.

invention presents a novel construction, com- 1 bination and arrangement of parts, as described herein and claimed, .and as illustrated in the drawing, wherein- Figure 1 is a view in side elevation of the intensifier. Figs. 2 and 3 are side views, respectively, of the outer and inner nonconducting disks. Fig. 1 is a view in side elevation of an insulating sleeve. Fig. 5 is a plan view of the insulating sleeve. Fig. 6 is a view in longitudinal section through the disks, insulating sleeve and metallic, apertured jacket, the electrodes being shown threaded in the disks. Fig. 7 shows the intensifier applied to a spark plug.

Referring now to the drawing for a more particular description, numeral '1 indicates a spark plug, and in order that the electrical charges may have greater intensity for causing ignition of the gas, and to enable an operator by visual examination to determine whether the electrical charges are conducted to the spark -plug, an intensifier for that purpose is provided consisting, in part, of the outer and inner, parallel disks 2 and 3, constructed of any suitable non-conducting material, said disks heing disposed substantially parallel, end to end, each being providedcwith an annular recess 4 opening on its periphery and inner end, the disk 2 being provided with threads 5 (Fig. 2.) opening on the longitudinal wall of said recess, andthe disk 3 being provided with an annular groove 6 openingon the longitudinal wall of its recess.

Numeral 7 indicates a cylindricaljacket or sleeve provided with opposed and cornparatively large apertures a. It is preferably constructed of metal since it is depended upon for connecting the disks and sustaining the electrodes in spaced relation, its outer end being provided with threads I) for engaging the threads 5 of disk 2, and

its inner end, preferably, is formed with an inwardly projecting annular flange c for engaging in the recess 6 of disk 3.

At 8. is indicated an insulating sleeve, preferably constructed of mica. It is disposed with its ends abutting on the inner ends of the disks and is circumscribed by the cylindrical jacket 7. In assembling the parts, after the insulating sleeve has been placed within the jacket, the lower end of saidjacket may be pressed inwardly within recess 6, and the flange a, formed in this manner, operates to firmly secure the jacket upon the disk. The disk 2 may then be ro-. tated for a connection of its threads 5 with the threads 5 of the cylindrical jacket.

While I have described in detail the means for connecting the ends of the cylindrical exactness in this respect, and it is considered that the longitudinal walls of the disks may beprovided with any suitable fastening devices for coiiperation with any suitable fastening devices upon the ends of the jacket prevent undue vibration.

Numerals 9 and 10 indicate electrodes which may be disposed axially with their inner ends adjacent to each other, between the disks, a suitable distance apart, while threaded in the respective disks 2 and 3. A conductor 11 may communicate with any suitable source of electrical supply, while. compressed between the washer 12 upon disk 2 and the nut 13; and the ring 14 of the electrode 10 may be secured to the electrode 15 of the spark plug by the nut 16 which is threaded onpsaid electrode.

It will be'noted that the cylindrical acket 7 is insulated in ,a manner to prevent a short circuit, the disks 2 and 3 having a diameter considerably greater than that of the jacket. On account of the transparent .SlGBVJ 8 the electrodes are provided with for securing the parts sufliciently firm to additional insulation, and dust, cinders or other objectionable substances Will be prevented from entering the apertures a of the cylindrical jacket.

\Vhat I claim as my invention and desire to secure by Letters Patent is,

1. A spark plug intensifier, comprising, in combination With a pair of electrical insulating disks disposed end toend, each being formed With an annular recess opening on its side and inner end and provided with a fastening device disposed annually on the longitudinal Wall of said recess, a metallic, apertured, cylindrical jacket between the disks and provided with fastening devices at its ends adapted to engage the fastening devices of the disks, an insulating sleeve circumscribed by the cylindrical jacket, and

- a pair of electrodes formed as screws disposed axially of and traversing the disks, each being provided, adjacent to its outer end, With devices for.clamping an electrical conductor.

2. A spark plug intensifier, comprising, in combination With a pair of electrical insulating disks disposed end to end, each being formed with an annular recess opening on its side and inner end and provided With a fastening device disposed annularly on the longitudinal Wall of said recess, an

apertured, cylindrical jacket interposed between the disks and provided With annularly disposed fastening devices at its ends adapted to register ivith the fastening devices of the disks, and a pair of electrodes each being threaded axially in one of said disks to dispose one of its terminals between the disks, each electrode being provided adductor.

jacentto its opposite end with devices for clamping an electrical conductor.

3. In a spark plug intensifier, the combination of a pair of electrical insulating disks disposed end to end, each being provided With an annular recess opening on its side and innervend, a metallic, apertured, cylindrical acket disposed between the disks with itsends engaging in said recesses, an insulating sleeve disposed With its ends abutting upon the inner ends of the disk While cylindrical jacket provided at its ends with devices for clamping the disks While disposed wlth its ends in the recesses vthereof, an insulatmg sleeve disposed with its ends abutting upon the innerends of the disks While circumscribed by the cylindrical jacket, and a pair of electrodes threaded axially in the disks, each being provided with devices for clamping an electrical con- In testimony Whereof,I have afiixed my signature in presence of two Witnesses.

, EDWARD F. COGLEY Witnesses:

HIRAM A. STURcEs, ARTHUR H. STURcEs,

Copies of this patent may be obtainegi for five cents each, by addressing the Commissioner of Eaten ts,

. i Washington, D. Q. 

